The Face Temperatures of a Flat Wall Are 650°C and 450°C

question 28

Multiple Choice

The face temperatures of a flat wall are 650°C and 450°C respectively and the thermal conductivity of wall material is 0.30 kcal/m-hr-°C. For a wall thickness of 20 cm, the rate of heat conduction per square meter of wall area will be

• A)37,500 kg
• B)300 kcal/hr
• C)600 kcal/hr
• D)3000 kcal/hr
• E)150 kcal/hr

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